Messages
Proposals
Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.
Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support
Alexandra Opell CHEM 1110L
Ms. Kurzenberger
Lab Report #2 - Density
Background All matter has mass and volume, which means it takes up space. The relationship between these values is the substances density, a characteristic of matter. A characteristic property can be used to identify elements or compounds. Density is defined as mass per unit volume of a substance. By accurately measuring the mass and volume of the liquids, the density is calculated. By accurately measuring the volume displacement of water and the mass of the metals (solids), the density is calculated. The following substances will be used in the experiments: water, ethanol, one unknown liquid, iron, aluminum, and one unknown solid.
Hypothesis By identifying the density of known liquids and solids, the unknow liquid and unknown solid can be identified by their density. Density of solids are higher than the density of liquids.
Section 1: Materials/Methods Containers: 50 mL graduated cylinder Materials: Water, Ethanol, Unknown Liquid Instruments: Balance
Section 1: Find the Density of Various Liquids (Experiments 1 and 2)
o Observation: Using the 50 mL graduated cylinder, the volume and mass were increased and measured for both water and ethanol (C2H5OH), and an unknown liquid.
o Lab Results: The density of water, ethanol, and the unknown liquid are 1.000, 0.7893, and 1.1100 respectively. Density of the unknown liquid provides the conclusion that the liquid is ethylene glycol.
Find the Density of Various Liquids Mass (g)
Experiment Total Volume (mL) Water Ethanol Ethylene Glycol
50 mL graduated cylinder 0.00 54.000 54.000 54.000
Add 10.00 mL 10.00 64.000 61.893 65.100
Add 10.00 mL 20.00 74.000 69.786 76.200
Add 10.00 mL 30.00 84.000 77.679 87.300
Density (g/mL) 1.0000 0.7893 1.1100
o Data Analysis: When water is increased by 10.00 mL, the result was an increase in 10.000 g. The mass increased equally with the volume. Ethanol when increased by 10.00 mL had less of an increase in mass than the water. Ethanol is less dense than water and will float. Alternatively, when ethylene glycol was increased by 10.00 mL an increase was observed at more than water. Therefore, ethylene glycol is denser than water and will sink.
Alexandra Opell CHEM 1110L
Ms. Kurzenberger
Section 2: Materials/Methods
Containers: 50 mL graduated cylinder
Materials: Water, iron (Fe), aluminum (AI), unknown metal
Instruments: Balance
Section 2: Find the Density of Various Metals (Experiments 3 and 4)
o Observation: Using the 50 mL graduated cylinder and an initial mass of 84.000 g and volume of 30.00 mL (water) add various metals to find water displacement and density of the solids.
o Lab Results: Iron has a density of 7.87 g/cm3 while aluminum has a density of 2.70 g/cm3. As the unknown metal was added in 10.00 mL increments, the density was calculated at 7.14 g/cm 3, which identifies the solid as Zinc.
Find the Density of Various Metals Total Volume (mL)
Experiment Total Metal (g) Mass (g) Iron Aluminum Zinc
50 mL graduated cylinder - 54.000 0.00 0.00 0.00
Add 30.00 mL Water (Initial) - 84.000 30.00 30.00 30.00
Add 5.00 mL 5.000 89.000 30.64 31.85
Add 5.00 mL 10.000 94.000 31.27 33.70 31.40
Add 5.00 mL 15.000 99.000 31.91 35.56 32.10
Add 5.00 mL 20.000 104.000 32.54 37.41 32.80
Add 5.00 mL 25.000 109.000 33.18 39.26 33.50
Density (g/cm3) 7.86 2.70 7.14
o Data Analysis: Aluminum is known to be lightweight, therefore seeing such a small density makes sense compared to iron. I ron is heavy and much denser, almost three times as dense as aluminum. The zinc had similar density to the iron but appears to be slightly less dense than iron.
Conclusions
By accurately measuring the mass and volume of a liquid and a solid, the data can be used to calculate density of the substance. Density is an identifying property and can be helpful to identifying an unknown liquid or solid. The density of solids substances appears to be denser than the liquid substances.
Applied Sciences
Architecture and Design
Biology
Business & Finance
Chemistry
Computer Science
Geography
Geology
Education
Engineering
English
Environmental science
Spanish
Government
History
Human Resource Management
Information Systems
Law
Literature
Mathematics
Nursing
Physics
Political Science
Psychology
Reading
Science
Social Science
Home
Blog
Archive
Contact
google+twitterfacebook
Copyright © 2019 HomeworkMarket.com
| Writer | Writer Name | Amount | Client Comments & Rating |
|---|---|---|---|
ONLINE |
Instant Homework Helper |
$36 |
She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up! |
Custom Original Solution And Get A+ Grades
Custom Original Solution And Get A+ Grades
Custom Original Solution And Get A+ Grades
| Writer | Writer Name | Offer | Chat |
|---|---|---|---|
ONLINE |
University Coursework HelpHi dear, I am ready to do your homework in a reasonable price. |
$232 | Chat With Writer |
ONLINE |
Top Essay TutorI have more than 12 years of experience in managing online classes, exams, and quizzes on different websites like; Connect, McGraw-Hill, and Blackboard. I always provide a guarantee to my clients for their grades. |
$235 | Chat With Writer |
ONLINE |
Helping HandI am an Academic writer with 10 years of experience. As an Academic writer, my aim is to generate unique content without Plagiarism as per the client’s requirements. |
$230 | Chat With Writer |
ONLINE |
Homework GuruHi dear, I am ready to do your homework in a reasonable price and in a timely manner. |
$232 | Chat With Writer |
Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.